get last resource ID (postgres) question

Hello, Its been a while since I have posted a question. Regards to all of you out there supporting the best in the biz (php and the open source community). I am wondering how to get the last resource ID from a call. I have a loop making pg calls, the resource ID's vary of course. Looking for a dynamic work around, otherwise a way to replace my print_r below with a line of code which grabs the last resource ID. Please check out this code, open to any suggestions. This code is abbreviated to ensure clarity: <? // made a call and got 3 rows using the results to further loop below for($x=0;$x<$rows){ $AGARR=pg_fetch_array($result, $x); $a=AGARR[0]; $b=$AGARR[1]; $c=$AGARR[2]; // here i open a new connection and expect 1 row for each iteration $callTmb="select z from mytable where tempfu='$a'"; $Tmbconnect=pg_connect("$db_parms_client"); $resultTmb=pg_exec($Tmbconnect, $callTmb); $Tmbrows=pg_numrows($resultTmb); echo $callTmb . "!! $Tmbrows"; // THE ABOVE ECHO gives me the call and expected "1" as number found. print_r($resultTmb); // SOMETIMES a particular return is result #13, sometimes #15. // THIS is used on various pages. I need to grab the last ID so that // it can remain dynamic, or have it reset so that the resouce ID is // always 0 for each iteration. } ?> Hope this makes some sense, more importantly, hope someone has a bone they could throw me :) THanks a bunch, Kristopher Spencer-Yates